TM 10-3930-659-20 12-16.    HYDRAULIC OIL RETURN TUBE-TO-STEERING VALVE HOSE REPLACEMENT. This task covers: a. Removal b. Installation INITIAL SETUP: Equipment Conditions: Materials/Parts: • Frame locking bar installed (see TM  10-3930- • Rags (Item 27, Appendix C) 659-10). • Three preformed packings • Cab skirts removed (see paragraph 14-6). • Transmission side guards removed (see para- References: graph 14-7). • TM 10-3930-659-10 Tools/Test Equipment: • General mechanic's tool kit (Item 44, Appendix F) NOTE A suitable container should be used to catch any draining hydraulic fluid.  Ensure that all spills are properly cleaned. a. REMOVAL 1. Remove hose (2) from hydraulic oil return tube (1). 2. Remove preformed packing (3) from hydraulic oil return tube (1).  Discard preformed packing. TA707584 12-45